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# Dimension in manual drawing?

Topic: Draw and write paper
May 22, 2019 / By Hebe
Question: First of all i have done the manual drawing on a A2 size paper. I have to put in all the dimension of the object that I have drawn. The problem is that i have double the scale. Original is 4cm and i double it to 16cm. And on the paper, i have write down the scale 1:2. So in the dimension, should i write 4cm or 16cm for that particular object dimension?

## Best Answers: Dimension in manual drawing?

Dottie | 1 day ago
Hey X...my first observation is that when your using a scale it is one ratio length compared to another ..In yours it might be that 4cm is equal to 100cm which is a 1 to 25 scale or it might be 4cm is equal to 24cm which is 1 to 6 or it could be as you noted 4cm to anything but when you DOUBLE the first ratio(4cm) you double the second ,,NOT square it.. so the number for doubling the scale of your drawing is 8cm equals something... another thing here that strikes me is how you are going to use your dimensions on the drawing..If you dimension any piece side or length and then call out a scale factor you must make sure the dimensioned areas are scaling properly. If you wanted to take a piece that was 10cm^3 solid block and you dimension one leg to 10cm changing the scale will not get you a part twice as big it will only confuse the machinist or builder. If you want to take that same block with the 10cm leg and make it twice as big or 20cm on each leg then you must change the dimension and the scale..Now that we have changed from 10cm to 20cm what has happened to the scale, In the beginning it was 4cm=10cm now the same length is equal to 20cm so the scale is 1/2 the original or 2cm =10cm.. Using the same drawing and all other things being equal.. Scaling a drawing without observing the dimensional aspects of the result will consistently get you a call from a confused workman..they love to catch the engineer in a goof up...In fact I think they live for it....Well its confusing enough on manual drawings but now with no-paper jobs and drawing full scale it takes a moment to get a drawing to fit the page at the right scale..sorry for the long delay in sending I went to lunch.... :) .From the E..
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Originally Answered: What is the probability of drawing 4 queens drawing from a deck of 52 cards, and you draw 4 queens.?
Let X be the number of queens drawn. X has the hypergeometric distribution with the following parameters. K = number of items to be drawn = 4 N = total objects = 52 M = number of objects of a given type = 4 The probability mass function for the hypergeometric distribution is defined as: P(X = x | N, M, K) = ( M C x ) * ( (N - M) C (K - x) ) / ( N C K ) for x = {0, ..., K} P(X = 0 | N, M, K) = 0 otherwise Note that the constraints on x here are very generic and it is possible to have value of K, N and M such that for x in {0, ..., K} P(X = x) = 0. If you have n objects and chose r of them, the number of combinations is: n! / ( r! (n-r)! ) this can be written as nCr the N C K is the total number of possible combinations of K objects drawn from N objects. the M C x is the number of combinations of getting x objects of the given type the (N - M) C ( K - x) is the number of combinations of non typed objects to be drawn. Looking at the PMF you should be able to see that it is the ratio of the number of combination of selecting the X of the items of interest times the number of combinations of choosing K - X items from the remaining items and this is all divided by the total number of combination for choosing K items from N objects. The Probability Mass Function, PDF, f(X) = P(X = x) is: P(X = 0 ) = 0.7187367 ← no queens P(X = 1 ) = 0.2555508 ← one queen P(X = 2 ) = 0.02499954 ←two queens P(X = 3 ) = 0.0007092068 ← three queens P(X = 4 ) = 3.693785e-06 ← four queens ← ANSWER === This is a probability. Odds are different. Let P be the probability of success. The odds of winning are defined as 1/p - 1 : 1 think of probability as the number of success divided by the number of total possible outcomes think of odds as the number of failures to the number of success. In other words, let f be the number of ways to fail. Let s be the number of success Probability P, the success probability, is s / (f + s) odds of success are: f : s the odds are 270724 : 1 for drawing four queens in four draws from the deck.
Originally Answered: What is the probability of drawing 4 queens drawing from a deck of 52 cards, and you draw 4 queens.?
Since there are 4 queens and 52 cards, the chances of drawing a queen every time of your 4 draws would be P = (1/52)(1/51)(1/50)(1/49).
Originally Answered: What is the probability of drawing 4 queens drawing from a deck of 52 cards, and you draw 4 queens.?
4 in 52 of drawing the first queen then 3 in 51 of drawing the second then 2 in 50 then 1 in 49. Summed up to be 1 in 270,725

Catrina
If you scaled 4 cm to 16 cm, you didn't double it, you multiplied by 4. so the scale factor is 4:1, since you increased the size. Write down the actual value, 4 cm .
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Originally Answered: What is the 4th dimension?
i found this really cool web that answers all your questions i think T\/T http://en.wikipedia.org/wiki/4th_dimensi...
Originally Answered: What is the 4th dimension?
Think of it this way. If you are going to the supermarket which closes at 5:00pm. You leave your house at 4:45pm and reach at 05:15pm and see it closed. Technically you should have completed your shopping in a 3-Dimensional world, where you just have to worry about 3 dimensions as time will not interfere. The time would have still been 4:45pm no matter where you go, making it possible for you to shop. However, in reality, when we move through any of the 3 dimensions, we also move through time. In actuality, you are always constantly moving, even when you do not move in any of the 3 dimensions. You are moving through time. Hence, time is considered as a 4th dimension, joining space and time into a singular space-time.

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